AMD’s Ryzen 7000X3D CPUs appear to have launched with a modicum of susceptibility to damage from enthusiastic tinkerers. Now we know that this kind of serious damage is a thing, rather than a fluke, we are keen to know what exactly is going on. Some of the first considered analysis comes courtesy of Igor’s Lab, which has just published a report and findings based upon a fatally damaged CPU’s pins.
A recent story concerning a burned-out Ryzen 7000X3D has captivated us over recent days. When a PC goes seriously wrong, it isn’t often the CPU to blame, and they also aren’t often damaged by consumers post-installation. In this case, highlighted in our report from Friday using Redditor Speedrookie’s information and pictures, the CPU is most definitely seriously damaged - but it looks like the motherboard is to blame.
There wasn’t enough evidence to draw conclusions when the story broke. Our initial thoughts were that the visible damage was related to the CCD chiplet with 3D V-Cache SRAM tile on top overheating. Last month, we saw expert overclocker der8auer share a video where he accidentally fried a Ryzen 7000X3D by being too reckless with voltage.
However, the tweaks applied would have been comfortable for a Ryzen chip without 3D V-Cache. Igor’s Lab editor Igor Wallossek discussed pin analysis theories with overclocker der8auer for roughly half an hour, to ensure he had a plausible theory to share regarding Speedrookie’s CPU.
Igor’s Lab worked to align AMD pinout diagrams with superimposed images of Speedrookie’s damaged CPU. Despite numerous complaints about the AMD source documentation, Igor thinks that an accurate overlay was achieved for a better understanding of the damage.
According to the investigative overlay work, the catastrophic physical damage zone corresponds to CPU pins that supply power to the cores. “All affected contacts supply the CPU with the VDDCR (CPU Core Power Supply),” wrote Igor’s Lab.
The above observation answers the question regarding the most seriously visibly damaged area of the chip, but raises further questions. For example, the investigator asks whether some pins had been physically damaged prior to this failure, or whether there was a short circuit in the CPU first. Moreover, Igor’s Lab rules out the following: defective spring contacts, bad assembly, or a bad socket batch.
The source publication admits that its investigations can’t really go further without the damaged goods in hand. However, there is likely going to be more to the tale of Speedrookie’s CPU. Reddit posts indicate that though AMD and Asus had invited returns of the damaged products, Gamers Nexus' Steve Burke beat them to it by purchasing the damaged high-tech remnants. Expect to see some GN-branded investigation videos in the not-too-distant future.
Earlier today we reported on MSI restricting voltages on Ryzen 7000X3D CPUs in a new motherboard BIOS update. The only voltage adjustments permitted going forward are negative offsets.
